1 files changed, 22 insertions, 1 deletions
diff --git a/test/builtins/Unit/addtf3_test.c b/test/builtins/Unit/addtf3_test.c
index 8f00f6de7..d24d0ebd7 100644
--- a/test/builtins/Unit/addtf3_test.c
+++ b/test/builtins/Unit/addtf3_test.c
@@ -11,11 +11,12 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "int_lib.h"
+#include <fenv.h>
 #include <stdio.h>
 
 #if __LDBL_MANT_DIG__ == 113
 
+#include "int_lib.h"
 #include "fp_test.h"
 
 // Returns: a + b
@@ -74,6 +75,26 @@ int main()
                      UINT64_C(0x61e58dd6c51eb77c)))
         return 1;
 
+#if (defined(__arm__) || defined(__aarch64__)) && defined(__ARM_FP)
+    // Rounding mode tests on supported architectures
+    long double m = 1234.0L, n = 0.01L;
+    fesetround(FE_UPWARD);
+    if (__addtf3(m, n) != 1235.0L)
+        return 1;
+
+    fesetround(FE_DOWNWARD);
+    if (__addtf3(m, n) != 1234.0L)
+        return 1;
+
+    fesetround(FE_TOWARDZERO);
+    if (__addtf3(m, n) != 1234.0L)
+        return 1;
+
+    fesetround(FE_TONEAREST);
+    if (__addtf3(m, n) != 1234.0L)
+        return 1;
+#endif
+
 #else
     printf("skipped\n");